This dataset contains the supplementary tables with fasting and postprandial plasma metabolomics data of chapters 5 and 7 from Anouk Gijbels' PhD thesis, "Precision nutrition for cardiometabolic health: insights from human dietary intervention studies". The research in this thesis aimed to contribute to a better understanding of the role of metabolic heterogeneity in response to diet, with a specific focus on tissue-specific insulin resistance. In addition, we aimed to contribute to a better understanding of the mechanisms by which diet affects metabolic health by investigating postprandial metabolism.</p